1213450211273 has 2 divisors, whose sum is σ = 1213450211274. Its totient is φ = 1213450211272.

The previous prime is 1213450211221. The next prime is 1213450211287. The reversal of 1213450211273 is 3721120543121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1156199121289 + 57251089984 = 1075267^2 + 239272^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213450211273 - 2¹⁶ = 1213450145737 is a prime.

It is a super-2 number, since 2×1213450211273² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213450211773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606725105636 + 606725105637.

It is an arithmetic number, because the mean of its divisors is an integer number (606725105637).

Almost surely, 2^{1213450211273} is an apocalyptic number.

It is an amenable number.

1213450211273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213450211273 is an equidigital number, since it uses as much as digits as its factorization.

1213450211273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 1213450211273 its reverse (3721120543121), we get a palindrome (4934570754394).

The spelling of 1213450211273 in words is "one trillion, two hundred thirteen billion, four hundred fifty million, two hundred eleven thousand, two hundred seventy-three".